I am convinced that sleep (and taking long walks) are the bedrock of mental well-being. What happens internally helps you manage what happens externally. So, in that spirit, I started taking some supplements to optimize my sleep. One of these is magnesium, two variants are the more popular for sleep: l-threonate and glycenate. I have noticed different responses. It is reported that glycenate variant improves muscle recovery, while l-threonate improves brain recovery. Interestingly, I have more nightmares and dreams taking l-threonate. Glycenate seems to only induce happy dreams. I wonder if this is because l-threonate is actually enabling my brain to process and revisit past traumas or other emotionally-charged events. It looks like taking l-threonate is analogous to doing a deep cleaning of your fridge. It is unpleasant, but your fridge will sparkle afterwards.